CN106898849A - A kind of dielectric waveguide filter with cross coupling structure - Google Patents
A kind of dielectric waveguide filter with cross coupling structure Download PDFInfo
- Publication number
- CN106898849A CN106898849A CN201710278276.XA CN201710278276A CN106898849A CN 106898849 A CN106898849 A CN 106898849A CN 201710278276 A CN201710278276 A CN 201710278276A CN 106898849 A CN106898849 A CN 106898849A
- Authority
- CN
- China
- Prior art keywords
- coupling
- wave guide
- waveguide
- main channel
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to radio-frequency devices field, a kind of dielectric waveguide filter with cross coupling structure is disclosed.The dielectric waveguide filter, bridging is coupled by subaisle and connects two Medium Wave Guide monomers on waveguide main channel and non-adjacent, and then the cross coupling structure for having concatemer to cascade is constituted on the waveguide main channel, thus can be according to cross-couplings theory or radio frequency simulation, the opposing coupler polarity for coupling bridge by number and master/slave passage that bridge is coupled to subaisle is configured, obtain various combination, the trap wave point of high-end and/or low side formation notch shape in filter freguency response passband, so as to zero extra cavity configuration need not be designed, the trap wave point that can be needed only need to be combined by simple cross-couplings, realize the rejection characteristic high of dielectric waveguide filter, beneficial to the electric property displaying of product and Miniaturization Design.
Description
Technical field
The present invention relates to radio-frequency devices field, in particular it relates to a kind of Medium Wave Guide filtering with cross coupling structure
Device.
Background technology
Wave filter is a kind of frequency-selecting device, can pass through the frequency content of special frequency channel in signal, and is greatly decayed
Other frequency contents.Waveguide filter is one kind of Frequent Filters in communication system, and traditional waveguide filter is wire chamber
Body structure, centre is air, and metal material is edge and plays a part of electromagnetic shielding and structural support.Using this kind of mode
Wave filter has quality factor q value higher, but volume and weight are larger, is unfavorable for installing and transports.With communication system
Development, it is desirable to which wave filter has filter with low insertion loss, suppression high, bears the features such as big power, low cost and miniaturization.Therefore it is normal with dielectric high
Number dielectric material substitutes air part, plays conduction electromagnetic wave and structural support effect, while playing electromagnetism by silver on medium block surface
Shielding action, can so be substantially reduced the volume and cost of wave filter.
It is usually in the prior art to be situated between for dielectric waveguide filter to improve the frequency selectivity of wave filter
Outside matter waveguide filter, increase a resonant frequency in high side of filter passband or the medium single-chamber of low side, by the medium
Single-chamber is coupled with input and output connector, can absorb signal of the wave filter around the medium single-chamber resonant frequency, and is obtained
Filter freguency response passband is high-end or low side forms the waveform of trap, and this structure is commonly referred to as zero cavity configuration.But
The trap quantity to be realized of this kind of zero cavity configuration must be consistent with the number of increased medium single-chamber, so can not only increase design
The difficulty of dielectric waveguide filter, while can also increase the volume of dielectric waveguide filter, so as to be unfavorable for production with product
Miniaturization.
The content of the invention
For the foregoing dielectric waveguide filter with zero cavity configuration, because design difficulty is larger, it is unfavorable for producing and produces
The problem of product miniaturization, the invention provides a kind of dielectric waveguide filter with cross coupling structure.
A kind of the technical solution adopted by the present invention, there is provided dielectric waveguide filter with cross coupling structure, including
Medium Wave Guide monomer, first wave guide joint and second waveguide joint；The number of the Medium Wave Guide monomer for multiple, and by
Coupling bridge in main channel is connected between two Medium Wave Guide monomers, all of Medium Wave Guide monomer is sequentially connected in series into waveguide main channel,
The first wave guide joint and the second waveguide joint connect the Medium Wave Guide list positioned at waveguide main channel two ends respectively
Body；Connection is provided with the waveguide main channel and the subaisle coupling bridge of two non-adjacent Medium Wave Guide monomers, so as to
The cross coupling structure for having concatemer to cascade is constituted on the waveguide main channel.
Optimization, when on the waveguide main channel constitute have tetrad cascade cross coupling structure when, then this four
In the cross coupling structure of disjunctor cascade, the subaisle coupling bridge for setting in the outer part is the coupling on coupling polarity and waveguide main channel
Close opposite polarity coupling bridge construction.
Optimization, in the cross coupling structure of tetrad cascade, if only existing subaisle coupling bridge in the outer part, set
Subaisle coupling bridge is put for coupling polarity couples bridge construction with the coupling polarity identical on waveguide main channel, during setting is in
Between the main channel coupling bridge of position be the coupling polarity coupling bridge construction opposite with the coupling polarity on waveguide main channel.
Further optimize, the coupling bridge construction opposite with the coupling polarity on waveguide main channel for coupling polarity,
The upper surface central area of the coupling bridge is provided with first blind hole of the depth between 36~55mm.
Further optimize, bridge construction is coupled with the coupling polarity identical on waveguide main channel for coupling polarity,
The upper surface central area not perforate of the coupling bridge is provided with second blind hole of the depth less than 31mm.
Optimization, it is provided with metal screen layer in the outer surface of the Medium Wave Guide monomer.Further optimize, the metal
Screen layer is by silver layer.
Optimization, the Medium Wave Guide monomer is cylindrical structure, regular polygon cylinder structure or rectangular structure.
Optimization, the Medium Wave Guide monomer is the solid being made up of ceramic medium material.
Optimization, the waveguide main channel is " V " font passage, " U " font passage or "Ji" type passage.
To sum up, using a kind of dielectric waveguide filter with cross coupling structure provided by the present invention, with as follows
Beneficial effect：(1) dielectric waveguide filter, couples bridging and connects on waveguide main channel and non-adjacent two by subaisle
Medium Wave Guide monomer, and then the cross coupling structure for having concatemer to cascade is constituted on the waveguide main channel, thus can basis
Cross-couplings theory or radio frequency simulation, the opposing coupler pole of bridge is coupled by number and master/slave passage that bridge is coupled to subaisle
Property configured, obtain various combination, filter freguency response passband is high-end and/or low side forms the trap of notch shape
Point, so as to zero extra cavity configuration need not be designed, only need to combine the trap wave point that can be needed by simple cross-couplings,
The rejection characteristic high of dielectric waveguide filter is realized, beneficial to the electric property displaying of product and Miniaturization Design；(2) medium
Waveguide filter also has simple structure, is readily produced and the features such as low cost of manufacture, is easy to actual promotion and application.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is that the structure of the dielectric waveguide filter of the cross coupling structure with the cascade of three disjunctors that the present invention is provided is shown
It is intended to.
Fig. 2 is two kinds of frequencies of the dielectric waveguide filter of the cross coupling structure that there are three disjunctors to cascade that the present invention is provided
Rate responds analogous diagram.
Fig. 3 is the blind hole depth on coupling bridge and coupling amount and the relation schematic diagram of coupling polarity that the present invention is provided.
Fig. 4 is the relation schematic diagram of blind hole diameter and coupling amount on coupling bridge that the present invention is provided.
Fig. 5 is the dielectric waveguide filter of the cross coupling structure with the cascade of the first tetrad that the present invention is provided
Structural representation.
Fig. 6 is the Medium Wave Guide filtering of four kinds of cross coupling structures that there is the first tetrad to cascade that the present invention is provided
The frequency response analogous diagram of device.
Fig. 7 is present invention offer with second dielectric waveguide filter of the cross coupling structure of tetrad cascade
Structural representation.
Fig. 8 is the dielectric waveguide filter of the cross coupling structure with the cascade of the third tetrad that the present invention is provided
Structural representation.
Fig. 9 is that the structure of the dielectric waveguide filter of the cross coupling structure with the cascade of five disjunctors that the present invention is provided is shown
It is intended to.
Figure 10 is four kinds of dielectric waveguide filters of the cross coupling structure that there are five disjunctors to cascade that the present invention is provided
Frequency response analogous diagram.
Figure 11 is the structure of the dielectric waveguide filter of the cross coupling structure with the cascade of six disjunctors that the present invention is provided
Schematic diagram.
In above-mentioned accompanying drawing：1st, Medium Wave Guide monomer 201, first wave guide joint 202, second waveguide joint 3, main channel
Coupling bridge 4, subaisle coupling bridge 501, the first blind hole 502, the second blind hole.
Specific embodiment
Hereinafter with reference to accompanying drawing, by way of example describe in detail present invention offer with cross coupling structure
Dielectric waveguide filter.Herein it should be noted that being used to help understand the present invention for the explanation of these way of example, but
Do not constitute limitation of the invention.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of passes
System, for example, A and/or B, can represent：Individualism A, individualism B, while there are tri- kinds of situations of A and B, the terms
"/and " it is another affiliated partner relation of description, expression there may be two kinds of relations, for example, A/ and B, can represent：Individually deposit
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, typicallys represent forward-backward correlation pair as if a kind of "or" is closed
System.
Embodiment one
Fig. 1 shows the knot of the dielectric waveguide filter of the cross coupling structure with the cascade of three disjunctors of present invention offer
Structure schematic diagram, Fig. 2 shows that two kinds of present invention offer have the Medium Wave Guide filtering of the cross coupling structure of three disjunctors cascade
The frequency response analogous diagram of device, Fig. 3 shows blind hole depth and coupling amount and the coupling polarity on coupling bridge of present invention offer
Relation schematic diagram, Fig. 4 shows the relation schematic diagram of blind hole diameter and coupling amount on coupling bridge of present invention offer.
The dielectric waveguide filter of the cross coupling structure that there are three disjunctors to cascade that the present embodiment is provided is one
Five rank wave filters, including five Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joints 202；Five are given an account of
Matter waveguide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, is sequentially connected in series into waveguide main channel, institute
State first wave guide joint 201 and the second waveguide joint 202 and connect the medium ripple for being located at waveguide main channel two ends respectively
Lead monomer 1；A connection is provided with simultaneously on the waveguide main channel and the subaisle of two non-adjacent Medium Wave Guide monomers
Coupling bridge 4, forms a cross coupling structure for three disjunctors cascade.
As shown in figure 1, the dotted line in figure is the trajectory of waveguide main channel, and include a friendship for three disjunctors cascade
Fork coupled structure：Second Medium Wave Guide monomer i.e. on waveguide main channel is (i.e. along first wave guide joint 201 to second waveguide
The direction of joint 202 along number second Medium Wave Guide monomer) with the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201
To the direction of second waveguide joint 202 along the 4th Medium Wave Guide monomer for counting) it is connected by subaisle coupling bridge 4, realize
Second Medium Wave Guide monomer (connects across the 3rd Medium Wave Guide monomer along first wave guide joint 201 to second waveguide
Three Medium Wave Guide monomer of first 202 direction along number) coupled with the 4th Medium Wave Guide monomer, thus can produce
One trap wave point.So in the design process of wave filter, can be controlled by designing the coupling amount size of subaisle coupling bridge 4
The distance of trap wave point Distance Filter passband processed；The positive and negative of coupling polarity that bridge 4 is coupled by designing the subaisle (typically gives tacit consent to ripple
It is positive coupling to lead the coupling polarity on main channel, and the coupling polarity opposite with the coupling polarity on waveguide main channel is negative coupling)
It is the outer high band or outer low-frequency range in filter pass band to control trap wave point.
As shown in Figure 2 two kinds have the frequency response of the dielectric waveguide filter of the cross coupling structure of three disjunctors cascade
Analogous diagram：(a) in Fig. 2 show the Medium Wave Guide filtering when the coupling polarity of subaisle coupling bridge 4 is negative coupling
The frequency response analogous diagram of device, i.e., in the presence of a trap wave point LA in the outer low-frequency range of filter pass band BLP；(b) institute in Fig. 2
It is shown as when the frequency response analogous diagram that the coupling polarity of subaisle coupling bridge 4 is dielectric waveguide filter when just coupling,
There is a trap wave point HA on the outer high band of filter pass band BLP.Therefore without zero extra cavity configuration is designed, only need
The trap wave point that can be needed is combined by simple cross-couplings, the rejection characteristic high of dielectric waveguide filter is realized, profit
In the electric property displaying of product and Miniaturization Design.
Specifically, in order that the coupling polarity of subaisle coupling bridge 4 can be, but not limited in the pair to bear coupling
The upper surface central area of passage coupling bridge 4 is provided with first blind hole 501 of the depth between 36~55mm.As shown in figure 3, blind
The depth in hole can influence to couple the coupling polarity of bridge：When the depth of blind hole is shallower (less than 33mm), its coupling polarity is for just
Coupling, but when blind hole depth down to a certain extent when (more than 35mm), its coupling polarity can sport negative coupling, so
Afterwards with the further intensification of blind hole depth, the coupled characteristic of its negative coupling can be after a peak value be crossed gradually to positive coupling side
To differentiation.And as shown in figure 4, the coupling amount of blind hole is increased with enlarged diameter.From there through the depth for adjusting blind hole and directly
Footpath size, can obtain satisfactory trap wave point.
Optimization, it is provided with metal screen layer in the outer surface of the Medium Wave Guide monomer 1.The mode for setting the Rotating fields can
With but be not limited to gild technique or craft of gilding etc..Consider that the conductive effect of argent is more preferable than metallic gold, therefore in this reality
Apply in example, the metal screen layer is (to be used and gilded technique by upper metallic silver layer) by silver layer.
Optimization, the Medium Wave Guide monomer 1 can be, but not limited to be cylindrical structure, regular polygon cylinder structure or length
The column structures such as cube structure.As shown in figure 1, as an example, in the present embodiment, the medium monomer 1 is cuboid knot
Structure.
Optimization, the Medium Wave Guide monomer 1 is the solid being made up of ceramic medium material.Ceramic medium material is one
Hard dielectric material is planted, with dielectric constant and relatively low dielectric loss very high, while effective structural support can be provided.
The radio-frequency devices such as the dielectric filter designed by this dielectric material have miniaturization, high stability, low-loss, lightweight
Various advantages low with cost, are well positioned to meet the miniaturization and high performance requirement of following wave filter.Additionally, will be given an account of
Matter monomer 1 is designed as solid structure, can conveniently fabricate.
Optimization, the waveguide main channel is the track shapes such as " V " font passage, " U " font passage or "Ji" type passage
The passage of shape.As shown in figure 1, as an example, in the present embodiment, the main channel is " V " font passage.
To sum up, the dielectric waveguide filter of the cross coupling structure with the cascade of three disjunctors that the present embodiment is provided, tool
Have the advantages that：(1) dielectric waveguide filter, by forming the cross coupling structure that three disjunctors are cascaded, and leads to
Cross to subaisle coupling bridge opposing coupler polarity configure, can respectively obtain filter freguency response passband it is high-end or
Low side forms the trap wave point of notch shape, so that zero extra cavity configuration need not be designed, only need to be by simple cross-couplings group
The trap wave point that conjunction can be needed, realizes the rejection characteristic high of dielectric waveguide filter, beneficial to the electric property displaying of product
And Miniaturization Design；(2) dielectric waveguide filter also has simple structure, is readily produced and the features such as low cost of manufacture,
It is easy to actual promotion and application.Embodiment two
Fig. 5 shows the Medium Wave Guide filtering of the cross coupling structure with the cascade of the first tetrad of present invention offer
The structural representation of device, Fig. 6 shows that four kinds of present invention offer have the cross coupling structure of the first tetrad cascade
The frequency response analogous diagram of dielectric waveguide filter.
The dielectric waveguide filter of the cross coupling structure with the cascade of the first tetrad that the present embodiment is provided
It is a six rank wave filters, including six Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joints 202；Six
The Medium Wave Guide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, is sequentially connected in series into waveguide main logical
Road, the first wave guide joint 201 and the second waveguide joint 202 connect Jie positioned at waveguide main channel two ends respectively
Matter waveguide monomer 1；Two connections are provided with simultaneously on the waveguide main channel and the pair of two non-adjacent Medium Wave Guide monomers
Passage couples bridge 4, forms a cross coupling structure for tetrad cascade.
As shown in figure 5, the dotted line in figure is the trajectory of waveguide main channel, the Medium Wave Guide monomer 1 uses cylinder
Body structure, the main channel is " U " font passage, and includes a cross coupling structure for tetrad cascade：I.e. in waveguide
Second Medium Wave Guide monomer on main channel is (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along the of number
Two Medium Wave Guide monomers) respectively with the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint
Four Medium Wave Guide monomer of 202 directions along number) and the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the
Five Medium Wave Guide monomer of the direction of two waveguide connector 202 along number) it is connected by subaisle coupling bridge 4, realize described
Second Medium Wave Guide monomer is across the 3rd Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint 202
Three Medium Wave Guide monomer of the direction along number) coupled with the 4th Medium Wave Guide monomer, and realize described the
Two Medium Wave Guide monomers cross over the 3rd Medium Wave Guide monomer and the 4th Medium Wave Guide monomer and the 5th medium ripple
Lead monomer to couple, thus can produce two trap wave points.So in the design process of wave filter, equally can be by design two
The coupling amount size of subaisle coupling bridge 4 controls the distance of correspondence trap wave point Distance Filter passband respectively；It is secondary by design two
The coupling polarity of passage coupling bridge 4 it is positive and negative come to control correspondence trap wave point respectively be outer high band or outer low frequency in filter pass band
Section.
As shown in Figure 6 four kinds have the frequency of the dielectric waveguide filter of the cross coupling structure of the first tetrad cascade
Rate responds analogous diagram：The subaisle coupling bridge 4 that (a) in Fig. 6 show ought be in the outer part (connects second Medium Wave Guide monomer
Subaisle with the 5th Medium Wave Guide monomer couples bridge) coupling polarity be positive coupling and the coupling bridge 4 of subaisle in the inner part
The coupling polarity of (connect second Medium Wave Guide monomer and couple bridge with the subaisle of the 4th Medium Wave Guide monomer) is also for just
The frequency response analogous diagram of dielectric waveguide filter during coupling, i.e., in the presence of two on the outer high band of filter pass band BLP
Trap wave point HA1 and HA2；(b) in Fig. 6 show the coupling polarity of subaisle coupling bridge 4 that ought be in the outer part just to couple and leaning on
The frequency response analogous diagram of the dielectric waveguide filter when coupling polarity of the subaisle coupling bridge 4 of inner side is negative coupling, that is, deposit
In two the trap wave point LA1 and LA2 in the outer low-frequency range of filter pass band BLP；(c) in Fig. 6 show pair that ought be in the outer part
The coupling polarity of passage coupling bridge 4 is that the coupling polarity of negative coupling and the coupling bridge 4 of subaisle in the inner part is Jie when just coupling
The frequency response analogous diagram of matter waveguide filter, i.e., in the presence of two respectively in the outer low-frequency range of filter pass band BLP and outer high frequency
Trap wave point LA1 and HA1 in section, wherein, trap wave point HA1 Distance Filters passband closer to；(d) in Fig. 6 show ought be in the outer part
Subaisle coupling bridge 4 coupling polarity be the coupling polarity of negative coupling and the coupling bridge 4 of subaisle in the inner part for negative coupling when
Dielectric waveguide filter frequency response analogous diagram, that is, equally exist two respectively in the outer low-frequency range of filter pass band BLP
With the trap wave point LA1 and HA1 on outer high band, wherein, be equally trap wave point HA1 Distance Filters passband closer to.As optimization,
In order to obtain comparatively ideal Out-of-band rejection respectively in the both sides of filter pass band simultaneously, it is only necessary to which design is as follows：In tetrad cascade
In cross coupling structure, the subaisle coupling bridge 4 for setting in the outer part is the coupling polarity phase on coupling polarity and waveguide main channel
Anti- coupling bridge construction.Thus zero extra cavity configuration need not be equally designed, need to be only combined by simple cross-couplings
The trap wave point for being needed, realizes the rejection characteristic high of dielectric waveguide filter, and the electric property beneficial to product shows and small-sized
Change design.
Further optimize, the coupling bridge construction opposite with the coupling polarity on waveguide main channel for coupling polarity, together
Sample can be, but not limited to be provided with first blind hole of the depth between 36~55mm in the upper surface central area of the coupling bridge
501。
The dielectric waveguide filter of the cross coupling structure with the cascade of the first tetrad that the present embodiment is provided,
The technique effect that its technique effect is referred to embodiment one is derived from like a dream, is repeated no more in this.
Embodiment three
Fig. 7 shows that the Medium Wave Guide with second cross coupling structure of tetrad cascade of present invention offer is filtered
The structural representation of device.
The present embodiment enters one as the cross coupling structure cascaded with the first tetrad described by embodiment two
Prioritization scheme is walked, its difference is：The Medium Wave Guide monomer 1 is rectangular structure, and the main channel is "Ji" type
Passage, and second Medium Wave Guide monomer only on waveguide main channel is (i.e. along first wave guide joint 201 to second waveguide joint
Second Medium Wave Guide monomer of 202 directions along number) respectively with the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201
To the direction of second waveguide joint 202 along the 5th Medium Wave Guide monomer for counting) it is connected by subaisle coupling bridge 4, although
Only realize having second Medium Wave Guide monomer across the 3rd Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the
The direction of two waveguide connector 202 along number the 3rd Medium Wave Guide monomer) and the 4th Medium Wave Guide monomer (connected along first wave
Four Medium Wave Guide monomer of the first direction of 201 to second waveguide joint 202 along number) sent out with the 5th Medium Wave Guide monomer
Raw coupling, when can also produce two trap wave points, and makes two trap wave points symmetrical on filter pass band.
The described of the present embodiment offer has second dielectric waveguide filter of the cross coupling structure of tetrad cascade,
Embodiment two is compared to also to have the following technical effect that：(1) can be logical in filtering while subaisle coupling bridge number is reduced
The both sides of band obtain comparatively ideal Out-of-band rejection respectively, and further the electric property beneficial to product shows and Miniaturization Design.
Example IV
Fig. 8 shows the Medium Wave Guide filtering of the cross coupling structure with the cascade of the third tetrad of present invention offer
The structural representation of device.
The present embodiment enters one as the cross coupling structure cascaded with second tetrad described by embodiment three
Prioritization scheme is walked, its difference is：In the cross coupling structure of tetrad cascade, it is coupling to set subaisle coupling bridge 4
Close polarity and bridge construction is coupled with the coupling polarity identical on waveguide main channel, coupling bridge in main channel in an intermediate position is set
3 is the coupling polarity coupling bridge construction opposite with the coupling polarity on waveguide main channel.Compared with the wave filter of embodiment three, this
The frequency response characteristic of embodiment wave filter will not change, i.e., can also produce two trap wave points, and make the two trap wave points
It is symmetrical on filter pass band.In the actual design of dielectric waveguide filter and production, the coupling of bridge 4 is coupled due to subaisle
Resultant often than main channel coupling bridge 3 coupling amount it is small, such as still using embodiment three cross coupling structure, it is necessary to coupling amount very
The very deep coupling bridge construction of small and blind hole, but coupling bridge construction is unfavorable for the processing and production of product, and use the present embodiment
Cross coupling structure, due to subaisle coupling bridge 4 coupled characteristic is for positive coupling and coupling amount demand is small, and main channel couples
The coupled characteristic of bridge 3 is for negative coupling and coupling amount demand is big, can so make design structure more reasonable, and product strength is more preferable, more
Be conducive to the processing and production of product.
Further optimize, bridge construction is coupled with the coupling polarity identical on waveguide main channel for coupling polarity, can
With but be not limited to the coupling bridge upper surface central area not perforate or be provided with depth less than 31mm the second blind hole 502.
The dielectric waveguide filter of the cross coupling structure with the cascade of the third tetrad that the present embodiment is provided,
Embodiment three is compared to also to have the following technical effect that：(1) design structure can be made more reasonable, product strength more preferably, more has
Beneficial to the processing and production of product.
Embodiment five
Fig. 9 shows the knot of the dielectric waveguide filter of the cross coupling structure with the cascade of five disjunctors of present invention offer
Structure schematic diagram, Figure 10 shows that four kinds of present invention offer have the Medium Wave Guide filtering of the cross coupling structure of five disjunctors cascade
The frequency response analogous diagram of device.
The dielectric waveguide filter of the cross coupling structure that there are five disjunctors to cascade that the present embodiment is provided is one
Seven rank wave filters, including seven Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joints 202；Seven are given an account of
Matter waveguide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, is sequentially connected in series into waveguide main channel, institute
State first wave guide joint 201 and the second waveguide joint 202 and connect the medium ripple for being located at waveguide main channel two ends respectively
Lead monomer 1；Three connections are provided with simultaneously on the waveguide main channel and the subaisle of two non-adjacent Medium Wave Guide monomers
Coupling bridge 4, forms a cross coupling structure for five disjunctors cascade.
As shown in figure 9, the dotted line in figure is the trajectory of waveguide main channel, the Medium Wave Guide monomer 1 uses cylinder
Body structure, the main channel is " U " font passage, and includes a cross coupling structure for five disjunctors cascade：I.e. in waveguide
The 3rd Medium Wave Guide monomer on main channel is (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along the of number
Three Medium Wave Guide monomers) respectively with the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint
Five Medium Wave Guide monomer of 202 directions along number) and the 6th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the
Six Medium Wave Guide monomer of the direction of two waveguide connector 202 along number) it is connected by subaisle coupling bridge 4, in waveguide master
Second Medium Wave Guide monomer on passage is (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along the second of number
Individual Medium Wave Guide monomer) it is connected by subaisle coupling bridge 4 with the 6th Medium Wave Guide monomer, it is achieved in described
3rd Medium Wave Guide monomer is across the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint 202
Four Medium Wave Guide monomer of the direction along number) coupled with the 5th Medium Wave Guide monomer, realize described 3rd
Medium Wave Guide monomer crosses over the 4th Medium Wave Guide monomer and the 5th Medium Wave Guide monomer and the 6th Medium Wave Guide list
Body is coupled, and realizes that second Medium Wave Guide monomer crosses over the 3rd Medium Wave Guide monomer, the 4th Medium Wave Guide list
Body and the 5th Medium Wave Guide monomer are coupled with the 6th Medium Wave Guide monomer, thus can produce three trap wave points.
The cross coupling structure of five disjunctors cascade can be regarded as a cross-couplings knot for three disjunctors cascade in the present embodiment
Structure and a combination for the cross coupling structure of five disjunctors cascade, by the combination of different cross-couplings polarity and coupling amount, can
With but be not limited to obtain the dielectric waveguide filter of cross coupling structure that as shown in Figure 10 four kinds are cascaded with five disjunctors
Frequency response analogous diagram.
The dielectric waveguide filter of the cross coupling structure that there are five disjunctors to cascade that the present embodiment is provided, its technology
Effect is referred to embodiment one and the technique effect of embodiment two is derived from like a dream, is repeated no more in this.
Embodiment six
Figure 11 shows the dielectric waveguide filter of the cross coupling structure with the cascade of six disjunctors of present invention offer
Structural representation.
The dielectric waveguide filter of the cross coupling structure that there are six disjunctors to cascade that the present embodiment is provided is one
Six rank wave filters, including six Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joints 202；Seven are given an account of
Matter waveguide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, is sequentially connected in series into waveguide main channel, institute
State first wave guide joint 201 and the second waveguide joint 202 and connect the medium ripple for being located at waveguide main channel two ends respectively
Lead monomer 1；Two connections are provided with simultaneously on the waveguide main channel and the subaisle of two non-adjacent Medium Wave Guide monomers
Coupling bridge 4, forms a cross coupling structure for six disjunctors cascade.
As shown in figure 11, the dotted line in figure is the trajectory of waveguide main channel, and the Medium Wave Guide monomer 1 uses positive four
Side shape column structure, the main channel is " U " font passage, and includes a cross coupling structure for six disjunctors cascade：I.e.
Second Medium Wave Guide monomer on waveguide main channel is (i.e. suitable to the direction of second waveguide joint 202 along first wave guide joint 201
Second several Medium Wave Guide monomers) with the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint
Five Medium Wave Guide monomer of 202 directions along number) bridge 4 is coupled by the subaisle it is connected, on waveguide main channel the
One Medium Wave Guide monomer is (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along first Medium Wave Guide for counting
Monomer) with the 6th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along the 6th of number
Individual Medium Wave Guide monomer) bridge 4 is coupled by the subaisle it is connected, it is achieved in second Medium Wave Guide monomer and crosses over the
Three Medium Wave Guide monomers are (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along the 3rd Medium Wave Guide for counting
Monomer) and the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along the 4th of number
Individual Medium Wave Guide monomer) coupled with the 5th Medium Wave Guide monomer, realize first Medium Wave Guide monomer across
More second Medium Wave Guide monomer, the 3rd Medium Wave Guide monomer, the 4th Medium Wave Guide monomer and the 5th Medium Wave Guide list
Body is coupled with the 6th Medium Wave Guide monomer, thus can produce four trap wave points.
As shown in figure 11, the cross coupling structure of six disjunctors cascade can be regarded as two such as example IV institutes in the present embodiment
The combination of the cross coupling structure of the third tetrad cascade stated, and in the cross coupling structure of each tetrad cascade,
Subaisle coupling bridge 4 is set for coupling polarity couples bridge construction with the coupling polarity identical on waveguide main channel, setting is in
The main channel coupling bridge 3 in centre position is the coupling polarity coupling bridge construction opposite with the coupling polarity on waveguide main channel.By
This there may be band outer low-frequency range of two trap wave points positioned at filter pass band, and two trap wave points are located at the outer high frequency of band of filter pass band
Section, and make one high and one low two trap wave points symmetrical on filter pass band.
The dielectric waveguide filter of the cross coupling structure that there are six disjunctors to cascade that the present embodiment is provided, its technology
The technique effect that effect is referred to example IV is derived from like a dream, is repeated no more in this.
As described above, the present invention can be realized preferably.For a person skilled in the art, religion of the invention
Lead, design the dielectric waveguide filter with cross coupling structure of multi-form and do not need performing creative labour.Not
These embodiments are changed in the case of departing from principle of the invention and spirit, are changed, replaced, integrating and modification still falls within
In protection scope of the present invention.
Claims (10)
1. a kind of dielectric waveguide filter with cross coupling structure, it is characterised in that including Medium Wave Guide monomer (1),
One waveguide connector (201) and second waveguide joint (202)；
The number of the Medium Wave Guide monomer (1) is multiple, and is coupled by connecting main channel between two Medium Wave Guide monomers
Bridge (3), waveguide main channel is sequentially connected in series into by all of Medium Wave Guide monomer (1), the first wave guide joint (201) and described
Second waveguide joint (202) connects the Medium Wave Guide monomer (1) positioned at waveguide main channel two ends respectively；
Connection is provided with the waveguide main channel and the subaisle of two non-adjacent Medium Wave Guide monomers couples bridge (4), from
And the cross coupling structure for having concatemer to cascade is constituted on the waveguide main channel.
2. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that when in institute
State on waveguide main channel constitute have tetrad cascade cross coupling structure when, then the tetrad cascade cross coupling structure
In, it is the coupling polarity coupling bridge opposite with the coupling polarity on waveguide main channel that the subaisle for setting in the outer part couples bridge (4)
Structure.
3. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that connect four
In the cross coupling structure of body cascade, if the subaisle for only existing in the outer part couples bridge (4), subaisle coupling bridge is set
(4) for coupling polarity couples bridge construction with the coupling polarity identical on waveguide main channel, master in an intermediate position is set and is led to
It is the coupling polarity coupling bridge construction opposite with the coupling polarity on waveguide main channel that road couples bridge (3).
4. as claimed in claim 2 or claim 3 a kind of dielectric waveguide filter with cross coupling structure, it is characterised in that it is right
In the coupling polarity coupling bridge construction opposite with the coupling polarity on waveguide main channel, in the upper surface central area of the coupling bridge
It is provided with first blind hole (501) of the depth between 36~55mm.
5. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 3, it is characterised in that for coupling
Close polarity and couple bridge construction with the coupling polarity identical on waveguide main channel, do not opened in the upper surface central area of the coupling bridge
Hole is provided with second blind hole (502) of the depth less than 31mm.
6. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that described
The outer surface of Medium Wave Guide monomer (1) is provided with metal screen layer.
7. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 6, it is characterised in that the gold
Category screen layer is by silver layer.
8. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that given an account of
Matter waveguide monomer (1) is cylindrical structure, regular polygon cylinder structure or rectangular structure.
9. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that given an account of
Matter waveguide monomer (1) is the solid being made up of ceramic medium material.
10. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that described
Waveguide main channel is " V " font passage, " U " font passage or "Ji" type passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710278276.XA CN106898849B (en) | 2017-04-25 | 2017-04-25 | Dielectric waveguide filter with cross coupling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710278276.XA CN106898849B (en) | 2017-04-25 | 2017-04-25 | Dielectric waveguide filter with cross coupling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106898849A true CN106898849A (en) | 2017-06-27 |
| CN106898849B CN106898849B (en) | 2021-01-19 |
Family
ID=59197613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710278276.XA Active CN106898849B (en) | 2017-04-25 | 2017-04-25 | Dielectric waveguide filter with cross coupling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106898849B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994310A (en) * | 2017-11-29 | 2018-05-04 | 深圳市麦捷微电子科技股份有限公司 | A kind of dielectric waveguide filter negative zero point coupled structure |
| CN108649302A (en) * | 2018-04-26 | 2018-10-12 | 西南交通大学 | A kind of six chamber ceramic filters applied to 4G base station communications |
| CN109149024A (en) * | 2018-08-22 | 2019-01-04 | 京信通信系统（中国）有限公司 | The adjustment method of dielectric waveguide filter and its port power |
| CN109390644A (en) * | 2018-12-11 | 2019-02-26 | 深圳市麦捷微电子科技股份有限公司 | A kind of four mould dielectric waveguide filter of two-chamber |
| CN109461995A (en) * | 2018-12-27 | 2019-03-12 | 苏州艾福电子通讯有限公司 | A kind of waveguide filter using ceramic dielectric |
| CN110277613A (en) * | 2019-06-28 | 2019-09-24 | 武汉凡谷电子技术股份有限公司 | A kind of laminated integratedization dielectric filter |
| WO2020171247A1 (en) * | 2019-02-19 | 2020-08-27 | Samsung Electronics Co., Ltd. | A substrate waveguide filter and a coupling inversion structure thereof |
| WO2021022471A1 (en) * | 2019-08-06 | 2021-02-11 | 罗森伯格技术（昆山）有限公司 | Cross-coupled filter |
| CN112840508A (en) * | 2018-12-26 | 2021-05-25 | 华为技术有限公司 | Dielectric filter, duplexer and communication equipment |
| CN113614999A (en) * | 2019-01-08 | 2021-11-05 | 株式会社Kmw | Waveguide filter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043684A (en) * | 1989-10-31 | 1991-08-27 | General Signal Corporation | Compact high power, high directivity, waveguide directional coupler utilizing reactively loaded junction |
| CN202019042U (en) * | 2011-01-19 | 2011-10-26 | 四川九洲电器集团有限责任公司 | Linear phase filter |
| CN102403558A (en) * | 2011-07-13 | 2012-04-04 | 江苏贝孚德通讯科技股份有限公司 | TE011 mold circular cavity filter for a plurality of unsymmetrical zeros |
| CN102683771A (en) * | 2011-03-11 | 2012-09-19 | 东光株式会社 | Dielectric waveguide filter |
| CN103490124A (en) * | 2013-09-26 | 2014-01-01 | 西安空间无线电技术研究所 | Waveguide duplexer |
| CN104218281A (en) * | 2014-08-27 | 2014-12-17 | 西安空间无线电技术研究所 | TE01 mode dielectric filter |
| CN205177984U (en) * | 2015-11-25 | 2016-04-20 | 宁波泰立电子科技有限公司 | Structure is eliminated to spurious coupling of wave filter |
| CN206864582U (en) * | 2017-04-25 | 2018-01-09 | 四川省韬光通信有限公司 | A kind of dielectric waveguide filter with cross coupling structure |
-
2017
- 2017-04-25 CN CN201710278276.XA patent/CN106898849B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5043684A (en) * | 1989-10-31 | 1991-08-27 | General Signal Corporation | Compact high power, high directivity, waveguide directional coupler utilizing reactively loaded junction |
| CN202019042U (en) * | 2011-01-19 | 2011-10-26 | 四川九洲电器集团有限责任公司 | Linear phase filter |
| CN102683771A (en) * | 2011-03-11 | 2012-09-19 | 东光株式会社 | Dielectric waveguide filter |
| CN102403558A (en) * | 2011-07-13 | 2012-04-04 | 江苏贝孚德通讯科技股份有限公司 | TE011 mold circular cavity filter for a plurality of unsymmetrical zeros |
| CN103490124A (en) * | 2013-09-26 | 2014-01-01 | 西安空间无线电技术研究所 | Waveguide duplexer |
| CN104218281A (en) * | 2014-08-27 | 2014-12-17 | 西安空间无线电技术研究所 | TE01 mode dielectric filter |
| CN205177984U (en) * | 2015-11-25 | 2016-04-20 | 宁波泰立电子科技有限公司 | Structure is eliminated to spurious coupling of wave filter |
| CN206864582U (en) * | 2017-04-25 | 2018-01-09 | 四川省韬光通信有限公司 | A kind of dielectric waveguide filter with cross coupling structure |
Non-Patent Citations (1)
| Title |
|---|
| JIANWEI WU 等: "Design of High Q TE01 Mode Ring DR Cavity Filters With Cross-Couplings", 《2005 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019104901A1 (en) * | 2017-11-29 | 2019-06-06 | 深圳市麦捷微电子科技股份有限公司 | Negative zero-point coupling structure of dielectric waveguide filter |
| CN107994310A (en) * | 2017-11-29 | 2018-05-04 | 深圳市麦捷微电子科技股份有限公司 | A kind of dielectric waveguide filter negative zero point coupled structure |
| CN108649302A (en) * | 2018-04-26 | 2018-10-12 | 西南交通大学 | A kind of six chamber ceramic filters applied to 4G base station communications |
| CN109149024B (en) * | 2018-08-22 | 2020-03-24 | 京信通信技术(广州)有限公司 | Dielectric waveguide filter and port strength debugging method thereof |
| CN109149024A (en) * | 2018-08-22 | 2019-01-04 | 京信通信系统（中国）有限公司 | The adjustment method of dielectric waveguide filter and its port power |
| CN109390644A (en) * | 2018-12-11 | 2019-02-26 | 深圳市麦捷微电子科技股份有限公司 | A kind of four mould dielectric waveguide filter of two-chamber |
| CN109390644B (en) * | 2018-12-11 | 2024-04-16 | 深圳市麦捷微电子科技股份有限公司 | Double-cavity four-mode dielectric waveguide filter |
| US11909086B2 (en) | 2018-12-26 | 2024-02-20 | Huawei Technologies Co., Ltd. | Dielectric filter, duplexer, and communications device |
| CN112840508A (en) * | 2018-12-26 | 2021-05-25 | 华为技术有限公司 | Dielectric filter, duplexer and communication equipment |
| WO2020135646A1 (en) * | 2018-12-27 | 2020-07-02 | 华为技术有限公司 | Waveguide filter using ceramic medium |
| CN109461995A (en) * | 2018-12-27 | 2019-03-12 | 苏州艾福电子通讯有限公司 | A kind of waveguide filter using ceramic dielectric |
| CN109461995B (en) * | 2018-12-27 | 2024-08-09 | 华为技术有限公司 | Waveguide filter adopting ceramic dielectric |
| CN113614999A (en) * | 2019-01-08 | 2021-11-05 | 株式会社Kmw | Waveguide filter |
| CN113614999B (en) * | 2019-01-08 | 2023-04-11 | 株式会社Kmw | Waveguide filter |
| US11955680B2 (en) | 2019-01-08 | 2024-04-09 | Kmw Inc. | Waveguide filter |
| WO2020171247A1 (en) * | 2019-02-19 | 2020-08-27 | Samsung Electronics Co., Ltd. | A substrate waveguide filter and a coupling inversion structure thereof |
| CN110277613B (en) * | 2019-06-28 | 2021-12-17 | 武汉凡谷电子技术股份有限公司 | Laminated integrated dielectric filter |
| CN110277613A (en) * | 2019-06-28 | 2019-09-24 | 武汉凡谷电子技术股份有限公司 | A kind of laminated integratedization dielectric filter |
| WO2021022471A1 (en) * | 2019-08-06 | 2021-02-11 | 罗森伯格技术（昆山）有限公司 | Cross-coupled filter |
| US11973255B2 (en) | 2019-08-06 | 2024-04-30 | Prose Technologies (Suzhou) Co., Ltd. | Cross-coupled filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106898849B (en) | 2021-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106898849A (en) | A kind of dielectric waveguide filter with cross coupling structure | |
| CN206864582U (en) | A kind of dielectric waveguide filter with cross coupling structure | |
| CN209374645U (en) | Anti-interference filter and communication equipment | |
| CN109461995B (en) | Waveguide filter adopting ceramic dielectric | |
| CN201063353Y (en) | Cavity filter with naught cavity | |
| CN106992346B (en) | A kind of Millimeter Wave Rectangular Wave cavity body filter with dual transfer zero | |
| CN110265755A (en) | A kind of dielectric waveguide filter | |
| CN105823474B (en) | Optical fibre gyro resonance cavity chip based on tunable surface phasmon coupler | |
| CN110265753A (en) | A kind of dielectric waveguide filter | |
| CN209608623U (en) | Filter circuit and multiplexer | |
| CN106252797A (en) | A kind of bimodulus medium belt bandpass filter | |
| CN110024283A (en) | LC resonance device and LC filter | |
| CN114497941B (en) | Terahertz waveguide filter based on dual-mode resonant cavity and design method thereof | |
| CN106910969A (en) | A kind of Medium Wave Guide coupled structure and multistage dielectric waveguide filter | |
| CN109728385A (en) | A kind of dielectric filter coupled structure with symmetrical null characteristic | |
| CN111129669A (en) | Hybrid electromagnetic coupling all-dielectric filter | |
| CN105489988B (en) | Dual-passband differential bandpass filter based on half module substrate integrated wave guide structure | |
| CN109728389A (en) | A kind of double stacked formula difference microwave band-pass filter with wide stop band structure | |
| CN105406159B (en) | A kind of CT structure Terahertzs cross-couplings waveguide filter | |
| CN110112520B (en) | Dielectric waveguide filter and port coupling structure thereof | |
| CN207690974U (en) | Substrate integral wave guide filter | |
| CN206864581U (en) | A kind of Medium Wave Guide coupled structure and multistage dielectric waveguide filter | |
| CN209282363U (en) | A kind of filter | |
| CN201689958U (en) | Microwave filter | |
| WO2021168927A1 (en) | Coupling structure of ceramic waveguide filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |